This document discusses how to secure data access on Amazon EMR clusters using AWS Lake Formation. Lake Formation provides fine-grained, column-level access control and integrates with identity providers like Active Directory for single sign-on. It uses the AWS Glue Data Catalog as the metadata store. The document demonstrates how to configure an Amazon EMR cluster to use Lake Formation for authentication and query execution, controlling permissions at the table and column level rather than on the underlying Amazon S3 storage.